I have been having pregnancy symptoms. I last had a period on January 8-13th and about a week after that I started feeling nausea, tiredness, headache, increased appetite. I also, can not fit into my pants. In the stomach area I can not close them. I has a blood pregnancy test in early February and it was negative, I feel movement and it is not gas. Recently, I discovered in my urine medium clear bubbles. This is driving me nuts. My headaches I usually get are two times a week. I am clumsy constantly tripping or falling. In the last three weeks I fell three times. What should I do? I am not making anything up.